Originally Posted by
Fynn
Those were composed by Tsukasa Masuko, actually.
And what you're talking about is actually a natural progression that is logical for a game like FF, and it's not actually dependent on the composer - Uematsu's soundtrack to the Last Story is pretty much the same deal. Of course music is no longer center stage because designers rely more on cinematic scenes and voice acting to build their narrative and emotional impact on. For retro style games like Undertale or SMT it's still more about themes that stick with you as a direct reference to days gone by where the technology was weaker so you needed a good theme to make the music bearable.
Not saying either is better or worse, just different approaches that are the result of a natural progression in game design philosophy. Which is why I think soundtracks like XII's and XIII's should be judged on their own merits, taking into account the context that makes them what they are, rather than a raw juxtaposition with old titles and basing it all on how memorable the tracks are. Because damn it, of course The Lunarians are gonna be way more memorable because they sounded like trout so needed a melody that would stick. The things that make that track fantastic are just something totally different to what makes tracks like Dust to Dust fantastic.